When I install the program stated above on my Ipaq 3870 I get a message during installation about replacing a file (gapi or Px I believe). The file that the program wants to install is much older than the one it is trying to replace. As it is customary in PC I kept the file I had already since it was more recent. Some games, like Mr Do, Donkey Kong 3 and others run fine. My question is, should I replace the file with the older dated one? By the way what's the difference between the MegaCE and the regular one? Is one better than the other? Are there any positives or negatives to each one? Thank you for your help